Refrigeration Basics
This fluid carries heat through a refrigeration system.
Refrigerant
This component raises the pressure of refrigerant vapor.
Compressor
This "R" means removing refrigerant and storing it in an external container
Recover/recovery
Name one type of personal protective equipment used to protect against refrigerant exposure.
Appropriate gloves or eye protection
This certification type covers servicing small appliances.
Type I
An air conditioner cools a room by moving this out of the room.
Heat
This heat exchanger absorbs heat as refrigerant evaporates inside it.
Evaporator
This "R" means cleaning extracted refrigerant for reuse in equipment belonging to the same owner.
Recycle/recycling
Refrigerant can displace this gas in an enclosed space, creating an asphyxiation hazard.
Oxygen
This certification type covers high-and very-high-pressure appliances, excluding small appliances and motor vehicle air conditioners.
Type II
Refrigerant changes from liquid to this state as it evaporates.
Vapor/gas
This heat exchanger releases heat as refrigerant condenses inside it.
Condenser
This "R" requires processing refrigerant to a specific purity standard and verifying that purity.
Reclaim/reclamation
True or False: A disposable refrigerant cylinder can be refilled if it looks undamaged.
False
This certification type covers low-pressure appliances.
Type III
This term describes vapor above its saturation temperature at the relevant pressure.
Superheat
This component controls refrigerant flow and creates a pressure drop before the evaporator.
Metering devise/expansion device
A technician transfers used refrigerant in a cylinder without cleaning or testing it. Which "R" has occurred?
Recovery
Name the gas commonly used in approved refrigeration pressure-testing procedures instead of oxygen or compressed air.
Dry nitrogen
This certification covers all three section 608 equipment categories.
Universal
This term describes liquid below its saturation temperature at the relevant pressure.
Subcooling
Name the four main components in order, starting with the compressor.
Compressor, Condenser, metering device, evaporator
A coworker says recovered refrigerant is automatically reclaimed. Explain why that is incorrect.
Recovery only removes and stores it; reclamation requires processing and verified purity.
You find an unidentified refrigerant cylinder. A coworker says to guess its contents from its color. What should you do.
Do not guess or use it. Have the qualified instructor or technician resolve its identification and handling.
Besides containing five pounds or less of refrigerant, what factory-related conditions must an appliance meet to qualify as a small appliance?
It must be fully manufactured, charged, and hermitically sealed at the factory.